X-Mozilla-Keys:                                                                                 
JDana2@aol.com wrote:

Paul.    there is some new rechnology out to take a sand casting of aluminium
and turn it into one that has the strength of a forging . I believe Mac-DOUG
developed it. I my be wrong as to who developed it , but nevertheless, its
compressive strength would be much greater as part of the process is to
subject the casting to heat and tremendous pressure. In doing so the
grainstructure changes and the porosity dissappears. A gentleman who owns a
casting house told me about this process.  It might help in the making of the
aluminium housings for the Mazda. JIM DANA

That should be of great interest to Mazda but nobody I know is
considering making Mazda rotor housings as inserting the steel
liner in the casting  is daunting.

Paul Lamar
 
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